Arlington Clothing, Inc., shows the following information for its two divisions for year 1. Sales revenue Cost of sales Allocated corporate overhead Other general and administration Lake Region $4,190,000 2,706,300 251,400 556,900 Coastal Region $13,100,000 6,550,000 786,000 3,758,000 Required: a. Compute divisional operating income for the two divisions. Ignore taxes. b-1. What are the gross margin and operating margin percentages for both divisions? b-2. How well have these divisions performed? Complete this question by entering your answers in the tabs below. Reg A Req B1 Req B2 Compute divisional operating income for the two divisions. Ignore taxes. (Enter your answers in thousands of dollars rounded to 1 decimal place.) Lake Region Coastal Region Operating income